Dess starts an hour too late

Dear Community,

I am completely new here, and this is my first message here.
So if I do something… What is not allowed or something else should… Tell me, so I can learn from it.

About three months ago my Victron home battery started working.
I installed it myself. And that was actually surprisingly simple.
Now I am trained as an electrician, so that already helps for the knowledge.
Nevertheless, I made a considerable study of the Victron systems before the installation.
And that has resulted in a nice, well-functioning installation.
The installation consists of: 1x Multiplus II 5000 + serbo GX + 10 KW Voltsmile battery.
The installation runs on the DESS software.
And that also works very well.

Although I do notice one thing about the behavior of DESS. (green mode)
And that is also my question.
As can be seen in the images below.
The system starts the return of the stored solar energy just after the peak.
So the system actually starts an hour too late.
The peak is often around 8 p.m. Then the system starts the return at 9 p.m.
And I find that very strange. I won’t get poor from it… But it’s not a tip top earning model either.

This has been more the rule than the exception since the beginning of April (I switched to a different energy contract). Sometimes it goes well. But usually the system is just an hour too late.

Now my question…

How is this possible?
And what can I do about it.

Thank you very much in advance for your help!!